CN102234036B

CN102234036B - Image reading apparatus

Info

Publication number: CN102234036B
Application number: CN201010581780.5A
Authority: CN
Inventors: 室崎干雄
Original assignee: PFU Ltd
Current assignee: PFU Ltd
Priority date: 2010-04-20
Filing date: 2010-12-10
Publication date: 2014-08-27
Anticipated expiration: 2030-12-10
Also published as: JP2011228963A; JP5610826B2; US8575581B2; US20110253916A1; CN102234036A

Abstract

An apparatus includes: a body including a port into which a medium is insertable; a light source that is provided in the body and illuminates when an image is read for the medium that has been inserted into the port; a guide and output unit that is optically connected to the light source, guides light emitted from the light source, and outputs the guided light into the port; a receiver that detects the output light; and a determiner that determines whether the medium has been inserted into the port based on a result of the detection. The light source also illuminates when the determiner makes the determination. A region in the port through which the light output from the light guide and output unit passes exists from one end to the other end of the port in a width direction being a longitudinal direction of the port.

Description

Image read-out

The cross reference of related application

The 2010-097410 Japanese patent application that the application submitted to based on April 20th, 2010, and require to using it as basis for priority, its full content is incorporated herein by reference.

Technical field

The present invention relates to image read-out, when transmitting plate-shaped medium, pick up the image that is transmitted plate-shaped medium.

Background technology

By convention, proposed to pick up the image read-out of the image that is transmitted plate-shaped medium when transmitting plate-shaped medium.In such image read-out, when the insert port of plate-shaped medium insertion apparatus fuselage, by delivery roller, be sent to imaging device, by imaging device imaging and by delivery roller carrying device fuselage.

In general, in image read-out, provide and detected the sensor that is inserted into the plate-shaped medium in this insert port, when this sensor detects plate-shaped medium, about being inserted into the plate-shaped medium in this insert port, carry out the transmission of being undertaken by delivery roller of imaging device, and the imaging of being undertaken by imaging device.

Technology as relating to plate-shaped medium detection, has proposed a kind of paper feeding equipment, by the sensor providing between paper position and paper-feeding passage is provided, detects original copy (No. 4300943 Japanese Patents).

In the paper feeding equipment of No. 4300943 Japanese Patents, the original copy of placing position at original copy is for example sent into and on mouthful Width, is being arranged apart from each other a plurality of sensors.In each sensor, by fulcrum, about opto-electronic pickup, can unsteadily support paper side tucker parts and sensor tucker.In each sensor, when paper side tucker parts act on the original copy of being placed position taking-up by extraction roller from original copy, paper side tucker parts and sensor tucker swing, make opto-electronic pickup receive the light of selfluminous cell to detect original copy, this light was once stopped by sensor tucker.In other words, the paper feeding equipment in No. 4300943 Japanese Patents detects the width of original copy according to the Output rusults of the sensor of arranging apart from each other on Width.

In general, in image read-out, in order to detect the plate-shaped medium that is inserted in insert port or in order whether to have placed plate-shaped medium in test paper pallet, along Width, a plurality of sensors have been installed, or the sensor with many arms has been installed, and described many arms are as the paper side tucker parts in the paper feeding equipment in No. 4300943 Japanese Patents for example.

In these sensors because part count increase with and structure become complicated, that the size of device becomes is large, cost improves.The detection that therefore, need to have a novel structure is inserted into the device of the plate-shaped medium in insert port.

Summary of the invention

The object of the invention is to solve at least partly the described problem in routine techniques.

According to an aspect of the present invention, image read-out comprises: device fuselage, comprises the insert port that can insert plate-shaped medium; Existing light source, is provided in described device fuselage, and is throwing light on when being inserted into the described plate-shaped medium reading images in described insert port; Photoconduction and output unit, optics is connected to described existing light source, the light that guiding is launched from described existing light source, and guided light is outputed in described insert port; Light receiving unit, detects the light of exporting; And judging unit, according to the result of the detection of described light receiving unit, judge whether described plate-shaped medium has been inserted in described insert port, wherein, when described judging unit judges during whether described plate-shaped medium has been inserted into described insert port, described existing light source also throws light on, and the region of passing through from the described light of described photoconduction and output unit output in described insert port is present on the Width longitudinally of described insert port the end to end from described insert port.

The detailed description of consider reading the current preferred embodiment of following the present invention together with accompanying drawing will be better understood more than the present invention with other object, feature, advantage and technology and industrial significance.

Accompanying drawing explanation

Fig. 1 is according to the transparent view of the image read-out overview of first embodiment;

Fig. 2 is the lateral plan of described image read-out overview;

Fig. 3 is the birds-eye view of described image read-out vitals;

Fig. 4 is time diagram, the relation between showing the light quantity received and cut into slices when existing light source continuing illumination;

Fig. 5 is time diagram, shows the relation between the light quantity received when existing light source scintillation and section;

Fig. 6 is time diagram, shows the relation between the light quantity received when existing light source glimmers in another way and section;

Fig. 7 is the outline flowchart of described image read-out operating process;

Fig. 8 is according to the birds-eye view of the image read-out vitals of second embodiment of the invention;

Fig. 9 is the birds-eye view of another example of described image read-out vitals;

Figure 10 is according to the schematic diagram of the image read-out of the 3rd embodiment;

Figure 11 is according to the schematic diagram of the image read-out of the 4th embodiment;

Figure 12 is according to the schematic diagram of the image read-out of the 5th embodiment;

Figure 13 is according to the schematic diagram of the image read-out of the 6th embodiment;

Figure 14 A and Figure 14 B are according to the schematic diagram of the image read-out of the 7th embodiment.

The specific embodiment

Below with reference to accompanying drawing, explain according to some example embodiment of image read-out of the present invention in detail.The invention is not restricted to these embodiment.

Below explain the image read-out according to first embodiment of the invention.Fig. 1 is that Fig. 2 is the lateral plan of described image read-out overview according to the transparent view of the image read-out overview of first embodiment, and Fig. 3 is the birds-eye view of described image read-out vitals.Image read-out 1 transmits plate-shaped medium P and picks up the image that is transmitted plate-shaped medium P.Hereinafter, plate-shaped medium P is called " medium P " for short.In first embodiment, image read-out 1 is the so-called scanner that freely arranges, and while wherein inserting medium P in insert port 10a, does not require that the medium P being inserted in insert port 10a locates on Width.Width is the longitudinal of insert port 10a.Image read-out 1 comprises device fuselage 10, delivery roller 11, image-generating unit 12 and medium check implement 13.

According to first embodiment, device fuselage 10 is holding the assembly of image read-out 1, such as delivery roller 11, image-generating unit 12 and medium check implement 13.In first embodiment, device fuselage 10 is shells of rectangular shape, and insert port 10a forms on one of four sides of the device fuselage 10 of placing in the plane.Insert port 10a is for by the opening of medium P insertion apparatus fuselage 10, and is rectangular aperture, and long direction is substantially parallel with described plane in front elevation.At Width, insert port 10a longitudinally on width W be set to be wider than the width W p on Width in the medium P that can be imaged unit 12 imagings in device fuselage 10 with the medium P of maximum width.

Delivery roller 11 transmission medium P.In first embodiment, delivery roller 11 comprises for example paper pushing roller 111, and it is a pair roller, and line paper rolling wheel 112, and it is also a pair roller.

Paper pushing roller 111 is the delivery rollers 11 in the upstream arrangement of transmission direction, and is configured to the medium P that is inserted into device fuselage 10 from paper feed tray 2 to be sent to the position of carrying out imaging by 12 couples of medium P of image-generating unit.The transmission direction is here exactly the direction of transmission medium P.The position of hereinafter, carrying out imaging by 12 couples of medium P of image-generating unit is referred to as " image space ".In first embodiment, paper pushing roller 111 is pairs of rollers, comprises that its turning cylinder is disposed in the driving rolls 111a of transmission path below, with and turning cylinder be disposed in the return idler 111b of transmission path top.In first embodiment, return idler 111b, in the face of driving rolls 111a, is transmission path therebetween, and is arranged as and can contacts with driving rolls 111a.

In first embodiment, return idler 111b is supported, and makes it be pressed towards the surface that enters the medium P between driving rolls 111a and return idler 111b.In first embodiment, when medium P not yet enters between driving rolls 111a and return idler 111b, the outer surface of return idler 111b contacts with the outer surface of driving rolls 111a.Driving rolls 111a with enter medium P between driving rolls 111a and return idler 111b and become and contact, and rotated by the drive system of introducing below, to transmit the medium P contacting with driving rolls 111a in transmission direction.

Line paper rolling wheel 112 is the delivery rollers 11 in the arranged downstream of transmission direction, and the medium P that carries out imaging by image-generating unit 12 is displaced into discharge tray 3, namely installs outside fuselage 10.In first embodiment, line paper rolling wheel 112 is pairs of rollers, comprise driving rolls 112a that its turning cylinder is disposed in transmission path below with and turning cylinder be disposed in the return idler 112b of transmission path top.Because the relation between driving rolls 112a and return idler 112b is identical with the relation between driving rolls 111a and return idler 111b, so its explanation will be omitted.

Backing member 11a and transmission guiding 11b between paper pushing roller 111 and line paper rolling wheel 112, have been arranged.Backing member 11a, in the face of image-generating unit 12, is the image reading stay bearing plate 11c introducing below therebetween, and backing member 11a is arranged in the optical axis of the light of launching from image-generating unit 12.In first embodiment, backing member 11a is supported by the device fuselage 10 of image read-out 1.At main scanning direction, with the direction of transmission direction quadrature on, the width of backing member 11a is set to be longer than the width on main scanning direction in the medium P that can be scanned by image read-out 1 with the medium P of maximum width.So when image-generating unit 12 scanned medium P, a part of backing member 11a scans together with medium P.

Transmission guiding 11b is arranged between paper pushing roller 111 and backing member 11a, and between line paper rolling wheel 112 and backing member 11a.In other words, between paper pushing roller 111 and line paper rolling wheel 112, arranged two transmission guiding 11b, and backing member 11a guides between 11b two transmission in transmission direction.These transmission guiding 11b is supported by the device fuselage 10 according to the image read-out 1 of first embodiment.11b is between driving rolls 111a and backing member 11a in transmission guiding, or between driving rolls 112a and backing member 11a, supports the medium P being transmitted by delivery roller 11.

Transmission guiding 11b is arranged in the opposite of image reading stay bearing plate 11c together with backing member 11a.Image reading stay bearing plate 11c is supporting the medium P being transmitted by paper pushing roller 111 and line paper rolling wheel 112.Image reading stay bearing plate 11c is water white board member.In first embodiment, image reading stay bearing plate 11c is arranged on backing member 11a and transmission guiding 11b.

Driving rolls 111a and driving rolls 112a are rotated by drive system (not showing).Drive system comprises for example drive motor and propulsive effort transmission equipment.Drive motor is stepping motor for example.Drive motor by the control device 133 supply power drives of introducing from behind, for example, passes through from control device 133 transmitted signal drivers.So drive motor can rotate respectively via propulsive effort transmission equipment (in Fig. 2 in a clockwise direction) driving rolls 111a and driving rolls 112a.

Delivery roller 11, namely paper pushing roller 111 and line paper rolling wheel 112 drive via propulsive effort transmission equipment by be fed to the power supply of drive motor by control device 133.

Image-generating unit 12 is image pick up equipment.Image-generating unit 12 is configured to pick up the image of the medium P being transmitted by delivery roller 11.In first embodiment, image-generating unit 12 is disposed between two transmission guiding 11b in transmission direction.In first embodiment, an image-generating unit 12, at the opposite side with respect to transmission path that is furnished with a side of two transmission guiding 11b, is namely arranged, and is faced transmission path above transmission path.An image-generating unit 12 can respectively be arranged in transmission path above and below, to pick up the image of medium P both sides.

Image-generating unit 12 comprises light source 12a and imaging sensor 12b.

Light source 12a is existing light source.In other words, light source 12a carries out at the medium P about being inserted in insert port 10a the existing light source throwing light on when image reading operates.It is luminous that light source 12a is configured to the medium P that supports to backing member 11a and image reading stay bearing plate 11c.In device fuselage 10, provide light source 12a.Light source 12a is arranged as for example close imaging sensor 12b in transmission direction, and according to first embodiment, is arranged in the upstream of imaging sensor 12b.For example, light source 12a is white fluorescent lamp, light-emitting diode (LED) etc., by optical plate (not showing) outwards scattered beam, and the medium P transmitting to delivery roller 11 on main scanning direction transmitting linear light.Light source 12a optics is connected to photoconduction and the output unit 131 of introducing below, also luminous to photoconduction and output unit 131.While judging in whether medium P has been inserted into insert port, light source 12a illumination.Light source 12a responds from the lighting instruction of control device 133 and throws light on.

Imaging sensor 12b comprises for example a plurality of charge-coupled devices (CCD) image pickup device.Imaging sensor 12b can comprise for example a plurality of cmos image pickup devices.When imaging sensor 12b comprises a plurality of ccd image pickup device, for example white fluorescent lamp or White LED are as light source 12a.When imaging sensor 12b comprises cmos image pickup device, when namely image read-out 1 is so-called contact-type image sensor (CIS) image read-out, the LED of three types namely launches the BLED of the RLED of red (R) light, the GLED that launches green (G) light and blue (L) light of transmitting as light source 12a.

The image pickup device providing in imaging sensor 12b wire on main scanning direction is arranged.Imaging sensor 12b is arranged on catoptrical optical axis, the light from light source 12a of the medium P reflection that reflected light is being transmitted by delivery roller 11.When delivery roller 11 transmission medium P and light source 12a in transmission direction are throwing light on, region is read in imaging sensor 12b scanning, and this reads the whole region that region comprises medium P wherein.So, when delivery roller 11 is just in transmission direction during to image space transmission medium P, in other words, when carrying out the scanning of medium P, because reflected light, the light from light source 12a being reflected by medium P enters each image pickup device of imaging sensor 12b, and each image pickup device of imaging sensor 12b is just exported the picking up image signal of each exposure corresponding with reading region.Imaging sensor 12b, according to the picking up image signal of the each exposure from each image pickup device output, produces and exports the line data of each main scanning direction.

The light that the medium P that imaging sensor 12b is transmitting to image space according to delivery roller 11 reflects, picks up the image of medium P.Such imaging sensor 12b, according to the imaging instruction from control device 133, picks up the image of medium P.

Dielectric detector part 13 detects and is inserted into the medium P in insert port 10a.Dielectric detector part 13 comprises photoconduction and output unit 131, light receiving unit 132 and control device 133.

The light that photoconduction and output unit 131 are launched light source 12a outputs in insert port 10a.In first embodiment, photoconduction and output unit 131 comprise light output unit 131a and optical component 131b.

It is inner that light output unit 131a outputs to insert port 10a by the light of optical component 131b guiding.Here the insert port 10a inside of indication is while observing insert port 10a from front portion, forms the space of the opening of insert port 10a.In first embodiment, the one end on the Width of insert port 10a inside provides light output unit 131a.It is inner that the exit surface 131c of output light is exposed to insert port 10a, and light output unit 131a outputs to insert port 10a inside by the light of optical component 131b guiding.

Optical component 131b optics connects light source 12a and light output unit 131a.In first embodiment, optical component 131b is long member, and is for example photoconduction prism or optical fiber.Optical component 131b is between light source 12a and light output unit 131a.One end optics of longitudinally upper optical component 131b is connected to light output unit 131a.In first embodiment, longitudinally go up one end integrated connection of optical component 131b to light output unit 131a.The other end optics of longitudinally upper optical component 131b is connected to light source 12a.In first embodiment, longitudinally go up the other end integrated connection of optical component 131b to the optical plate (not showing) of light source 12a.Optical component 131b can be the catadioptre of placing between light source 12a and light output unit 131a, rather than long member.Namely, photoconduction and output unit 131 optics are connected to light source 12a, and the light by optical component 131b guiding from light source 12a transmitting, so that it is inner by light output unit 131a, the light of guiding to be outputed to insert port 10a.

Light receiving unit 132 detects from the light of photoconduction and output unit 131 outputs.The other end on the Width of insert port 10a inside provides light receiving unit 132.In light receiving unit 132, the optical receiving surface 132a that receives light is exposed to insert port 10a inside.In light receiving unit 132, optical receiving surface 132a is arranged in the opposite via insert port 10a of the exit surface 131c of light output unit 131a in photoconduction and output unit 131, to detect from light output unit 131a output and by the light of insert port 10a inside.In first embodiment, light receiving unit 132 can be according to the light detecting, the luminescence feature of detection light source 12a.

In other words, in first embodiment, the light that photoconduction and output unit 131 are launched from light source 12a from one end output of insert port 10a on Width.Light receiving unit 132 other end at insert port 10a on Width detects from the light of photoconduction and output unit 131 outputs.

Therefore the region of, passing through among insert port 10a from the light of photoconduction and output unit 131 outputs is present on Width the end to end from insert port 10a.In first embodiment, from light pass through in region among insert port 10a of photoconduction and output unit 131 outputs, the light beam of exporting from light output unit 131a crosses between one end of insert port 10a and the other end along Width.Hereinafter, from the light of photoconduction and output unit 131 outputs, among insert port 10a, by region, be called " light passes through region " for short.

Control device 133 is being controlled at least delivery roller 11 and image-generating unit 12.

Control device 133 is as judging unit, and is configured to according to the testing result of light receiving unit 132, judges in insert port 10a, whether to have inserted medium P.In first embodiment, the luminescence feature of light source 12a and the testing result of light receiving unit 132 that control device 133 contrast is introduced below, to judge whether inserted medium P in insert port 10a according to comparing result.

Control device 133 is also as light emitting control device, and is configured to judge at judging unit the luminescence feature that changes light source 12a while whether having inserted medium P in insert port 10a.In first embodiment, while whether having inserted medium P in judging insert port 10a as judging unit, control device 133 is changed into the luminescence feature of light source 12a the luminescence feature detecting for medium.Here the luminescence feature of the light source 12a of indication is the output of light source 12a, and it is from the light quantity of light source 12a transmitting or light intensity, the cycle flicker of light source 12a or the optical wavelength of launching from light source 12a.; in first embodiment; while whether having inserted medium P in judging insert port 10a; control device 133 is with respect to the luminescence feature of image reading operating period light source 12a; change periodically the output of light source 12a; flasher 12a periodically, or change periodically from the light wavelength of light source 12a transmitting, to detect in insert port 10a whether inserted medium P.

While whether having inserted medium P in judging insert port 10a as judging unit, control device 133 makes light source 12a to be different from the luminescence feature utilizing emitted light of surround lighting feature.Particularly, while whether having inserted medium P in judging insert port 10a as judging unit, for example, when surround lighting is fluorescence, namely periodically during blinker light, control device 133, to be different from the cycle of surround lighting flicker cycle, changes the output of light source 12a periodically, to be different from the cycle of surround lighting flicker cycle, flasher 12a periodically, or to be different from the cycle of surround lighting flicker cycle, change periodically from the optical wavelength of light source 12a transmitting.In following explanation, while supposing whether to have inserted medium P in judging insert port 10a as judging unit, control device 133 is flasher 12a periodically.

In Fig. 2, the image processor of being indicated by Reference numeral 20 is collected from many line data of imaging sensor 12b output, to produce captured image data corresponding to whole region of medium P.In Fig. 2, the interface unit being represented by Reference numeral 21 makes can communicate by letter between image read-out 1 and external electronic device (not showing).Image processor 20 responses, from the image processing instruction of control device 133, produce the captured image data corresponding with the whole region of medium P.Interface unit 21 response is from the communication instruction of control device 133, starts communicating by letter of the captured image data of carrying out between image processor 20 for example and external electronic device.Image processor 20 and interface unit 21 are controlled by control device 133.

Next step explanation is according to the operation of the image read-out 1 of first embodiment.

Fig. 4 is time diagram, relation between showing the light quantity received and cut into slices when existing light source continuing illumination, wherein in Fig. 4, (a) described from the light-receiving grade of light and the light-receiving grade of surround lighting of photoconduction and output unit 131 outputs, and in Fig. 4, (b) described from the light-receiving grade of photoconduction and output unit 131 light of output and the merging light of surround lighting.As shown in (a) in Fig. 4, when control device 133 judges while whether having inserted medium P in insert port 10a, if light source 12a is with the image reading luminescence feature of operating period, namely constant surround lighting continues illumination, light receiving unit 132 detections are constant light-receiving grade (at time point 0≤t≤t1) from the light of photoconduction and output unit 131 outputs, until inserted medium P in insert port 10a.But, while having inserted medium P (at time point t=t1) in insert port 10a, the medium P being inserted into insert port 10a from the light of photoconduction and output unit 131 outputs stops, and (at time point t >=t1) by light receiving unit 132, do not detected.

As shown in (a) in Fig. 4, when the optical receiving surface 132a of light receiving unit 132 receives surround lighting, because the light that light receiving unit 132 detects comprises from photoconduction and the light of output unit 131 outputs and mixing of surround lighting, as shown in (b) in Fig. 4, the light-receiving grade of the light that light receiving unit 132 detects becomes from photoconduction and the light-receiving grade of light of output unit 131 outputs and the summation of the light-receiving grade of surround lighting.Therefore,, when the optical receiving surface 132a of light receiving unit 132 receives surround lighting, even if inserted medium P in insert port 10a, the light-receiving grade in light receiving unit 132 also surpasses the section of the light quantity of receiving about light receiving unit 132 relatively continually.In other words, when the optical receiving surface 132a of light receiving unit 132 receives surround lighting, control device 133 can judge that medium P is not yet inserted in insert port 10a, even if inserted medium P in insert port 10a.

Therefore,, when control device 133 is configured to whether insert medium P in judging insert port 10a, flasher 12a is to improve the accuracy in detection of medium P periodically.Fig. 5 is time diagram, show the relation between the light quantity received and section when existing light source scintillation, wherein in Fig. 5, (a) described the light-emitting mode of light source 12a, in Fig. 5, (b) described from the light-receiving grade of light and the light-receiving grade of surround lighting of photoconduction and output unit 131 outputs, in Fig. 5, (c) described from the light-receiving grade of photoconduction and output unit 131 light of output and the merging light of surround lighting, and in Fig. 5, (d) described whether to have inserted in insert port 10a the judged result of medium P.

As (a) in Fig. 5 with (b), control device 133 makes light source 12a to be different from the luminescence feature illumination of surround lighting feature.In first embodiment, when control device 133 alternately changes periodically the output of light source 12a between high (Hi) grade and low (Lo) grade, by light receiving unit 132 with the identical mode detection of the light-emitting mode with light source 12a the light from photoconduction and output unit 131 outputs, until inserted medium P (at time point 0≤t < t2) in insert port 10a.But, while having inserted medium P (at time point t=t2) in insert port 10a, the medium P being inserted into insert port 10a from the light of photoconduction and output unit 131 outputs stops, by light receiving unit 132, is not detected (at time point t >=t2).Situation shown in these and Fig. 4 is similar.

When the optical receiving surface 132a of light receiving unit 132 receives surround lighting, as shown in (b) in Fig. 5, the light that light receiving unit 132 detects comprises from photoconduction and the light of output unit 131 outputs and mixing of surround lighting.Therefore,, as shown in (c) in Fig. 5, the light-receiving grade of the light that light receiving unit 132 detects becomes from photoconduction and the light-receiving grade of light of output unit 131 outputs and the summation of the light-receiving grade of surround lighting.But, because light source 12a repeats flicker, the optical receiving surface 132a of light receiving unit 132 receives by spells from the light of photoconduction and output unit 131 outputs.The light-receiving grade of the light therefore, being detected from light receiving unit 132 when light source 12a closes becomes the light-receiving grade of surround lighting.Thereby when light source 12a closes, the light-receiving grade in light receiving unit 132 can avoid surpassing the section of the light quantity of receiving about light receiving unit 132.That is,, when light source 12a is repeating to glimmer, the light-receiving grade in light receiving unit 132 also can avoid surpassing constantly the section of the light quantity of receiving about light receiving unit 132.

The testing result of the shadow part bit table Mingguang City receiving element 132 in Fig. 5 in (c) is different from the position of light source 12a light-emitting mode.The light-emitting mode of control device 133 contrast light source 12a and the testing result of light receiving unit 132 are the position that actual value that light receiving unit 132 detects light is different from light source 12a light-emitting mode to extract the testing result of light receiving unit 132.In Fig. 5 in (d), the position that the actual value that light receiving unit 132 detects light is different from light source 12a light-emitting mode is represented as " ON ", and light receiving unit 132 detects the position that the actual value of light is identical with light source 12a light-emitting mode, is represented as " OFF ".

As (c) in Fig. 5 with (d), control device 133 is when the light-emitting mode of light source 12a is different with the testing result continuous several times of light receiving unit 132, just judging and medium P detected, is surround lighting or medium P with what distinguish that dielectric detector part 13 detected.In the example shown in Fig. 5, in the light-emitting mode of light source 12a and the testing result of light receiving unit 132 continuously different at least four times time, when two or more pulses of namely luminous instruction are input to light source 12a (at time point t=t3), in control device 133 judgement insert port 10a, inserted medium P (at time point t >=t3).In other words, for a pulse, according to the luminous instruction of the response light-emitting mode of light source 12a and the light-receiving result of light receiving unit 132 of glimmering, that control device 133 cannot distinguish that dielectric detector part 13 detected is surround lighting or medium P.Therefore, control device 133 is configured to at least another pulse, the luminous instruction of contrast response and the light-emitting mode of light source 12a and the testing result of light receiving unit 132 of glimmering are surround lighting or medium P with what distinguish that dielectric detector part 13 detected.

In the example shown in Fig. 5, when the light-emitting mode of light source 12a and the testing result of light receiving unit 132 continuously different number of times be equal to or greater than 1 and while being less than 4, what control device 133 just judged that light receiving unit 132 detects is surround lighting, and medium P is not yet inserted in insert port 10a.In other words, when the light-emitting mode of light source 12a is different with the testing result of light receiving unit 132, the difference that control device 133 can be distinguished between the light-emitting mode of light source 12a and the testing result of light receiving unit 132 is due to the interference of surround lighting or owing to having inserted medium P in insert port 10a.Therefore, can improve and judge the accuracy of judgement degree that whether has inserted medium P in insert port 10a.

In Fig. 5, in (d), due to the interference of surround lighting, the position of error detection shows with thick frame table.In control device 133 is being judged during medium P is not yet inserted into insert port 10a, if it is different from the testing result of light receiving unit 132 that control device 133 detects the light-emitting mode of light source 12a, if the testing result of the light-emitting mode of light source 12a and light receiving unit 132 continuously different number of times equals 1 or be greater than 1 and be less than 4, control device 133 just judges that this is the error detection due to ambient light interference, shown in the thick frame in left side.In other words, in the example shown in Fig. 5, if control device 133 judging continuously after " OFF ", newly judge " ON " and " ON " continuously once or above and be less than four times, just control device 133 judges that this is the error detection due to ambient light interference.In control device 133 is being judged during medium P has been inserted into insert port 10a, if it is identical with the testing result of light receiving unit 132 that control device 133 detects the light-emitting mode of light source 12a, as dotted line around position as shown in, if the number of times that the light-emitting mode of light source 12a conforms to continuously with the testing result of light receiving unit 132 is once or above and be less than four times, control device 133 just judges that this is the error detection due to ambient light interference, shown in the thick frame on right side.In other words, in the example shown in Fig. 5, if control device 133, when judging continuously " ON ", is newly judged " OFF " and " OFF " continuously once or above and be less than four times, just control device 133 judges that this is the error detection due to ambient light interference.

When image read-out 1 is CIS image read-out, under the light-emitting mode of the light source 12a shown in Fig. 5, RLED, GLED and the BLED providing in light source 12a can be sequentially repeatedly provided singly, luminous by the switching between conversion Hi grade and Lo grade.Fig. 6 is the time diagram of relation between the light quantity received when existing light source glimmers in another way and section, wherein in Fig. 6, (a) described the light-emitting mode of light source 12a, in Fig. 6, (b) described light-receiving grade and the color of the light that light receiving unit 132 receives, in Fig. 6, (c) described whether to have inserted in insert port 10a the judged result of medium P.

As shown in (a) in Fig. 6, while alternately changing periodically the output of light source 12a between Hi grade and Lo grade, control device 133 sequentially repeatedly distributes RLED, GLED and BLED singly, luminous by the switching of light source 12a output level.As shown in (b) in Fig. 6, light receiving unit 132 is the light from photoconduction and output unit 131 outputs with the identical mode detection of the light-emitting mode with light source 12a, until inserted medium P (at time point 0≤t < t4) in insert port 10a.But, while having inserted medium P (at time point t=t4) in insert port 10a, the medium P being inserted into insert port 10a from the light of photoconduction and output unit 131 outputs stops, by light receiving unit 132, is not detected (at time point t >=t4).

In the example shown in Fig. 6, in example just as shown in fig. 5, the testing result of shadow part bit table Mingguang City receiving element 132 is different from the position of the light-emitting mode of light source 12a.Control device 133 contrasts the light-emitting mode of light source 12a and the testing result of light receiving unit 132, is different from the position of light source 12a light-emitting mode to extract the testing result of light receiving unit 132.In the example shown in Fig. 6, the position that the actual value that light receiving unit 132 detects light is different from light source 12a light-emitting mode is represented as " ON ", and light receiving unit 132 detects the position that the actual value of light is identical with light source 12a light-emitting mode, is represented as " OFF ".

Control device 133, when the light-emitting mode of light source 12a and the testing result continuous several times of light receiving unit 132 differ from one another, just judges and medium P detected, with what distinguish that dielectric detector part 13 detected, is surround lighting or medium P.In the example shown in Fig. 6, in the light-emitting mode of light source 12a and the testing result of light receiving unit 132 continuously at least twice when different, when at least one pulse of namely luminous instruction is input to light source 12a (at time point t=t5), in control device 133 judgement insert port 10a, inserted medium P (at time point t >=t5).In other words, for a pulse, only according to the section of the light-emitting mode of the light source 12a that glimmers of the luminous instruction of response and the light quantity received about light receiving unit 132, that control device 133 cannot distinguish that dielectric detector part 13 detected is surround lighting or medium P.Therefore, control device 133 is for a pulse, and the contrast luminous instruction of response and that the photochromic and light receiving unit 132 sending from light source 12a that glimmers detects is photochromic is surround lighting or medium P with what distinguish that dielectric detector part 13 detected.

In the example shown in Fig. 6, when the light-emitting mode of light source 12a and the testing result of light receiving unit 132 continuously different number of times be only once time, control device 133 just judges that light receiving unit 132 has detected surround lighting, and medium P is not yet inserted in insert port 10a.In other words, when the light-emitting mode of light source 12a is different with the testing result of light receiving unit 132, the difference that control device 133 can not only be distinguished between the light-emitting mode of light source 12a and the testing result of light receiving unit 132 is due to the interference of surround lighting or owing to having inserted medium P in insert port 10a, and compare with the situation shown in Fig. 5 also shortened insert port 10a medium P insertion and in insert port 10a, whether inserted time phase between the judgement of medium P (| t5-t4| < | t3-t2|).Therefore, can further improve the accuracy of judgement degree that whether has inserted medium P in insert port 10a.

In Fig. 6, in (c), due to the interference of surround lighting, the position of error detection shows with thick frame table.When control device 133 is being judged during medium P is not yet inserted into insert port 10a, if control device 133 detects the light-emitting mode of light source 12a and the testing result of light receiving unit 132 is different and the light-emitting mode of light source 12a and the testing result of light receiving unit 132 continuously different number of times be only once, control device 133 just judges that this is the error detection due to ambient light interference, shown in the thick frame in left side.In other words, in the example shown in Fig. 6, if control device 133 has been judged " OFF " continuously, new judgement " ON " and this " ON " continues only once, just control device 133 judges that this is the error detection due to ambient light interference.At control device 133, judging while having inserted medium P in insert port 10a, if it is identical with the testing result of light receiving unit 132 that control device 133 detects the light-emitting mode of light source 12a, as dotted line around position as shown in, and the light-emitting mode of light source 12a is only once with the number of times that the testing result of light receiving unit 132 conforms to continuously, as shown in the thick frame on right side, just control device 133 judges that this is the error detection due to ambient light interference.In other words, in the example shown in Fig. 6, if control device 133 has been judged " ON " continuously, new judgement " OFF " and " OFF " continues only once, just control device 133 judges that this is the error detection due to ambient light interference.

In the example shown in Fig. 6, because control device 133 is according to light-receiving grade and the color of light receiving unit 132 light of receiving, the light-emitting mode of contrast light source 12a and the light-receiving pattern of light receiving unit 132, for example, while having inserted medium P in insert port 10a, even if the light-receiving grade in light receiving unit 132 becomes Hi, the color of the light of the LED the transmitting whether color of the light that control device 133 also can be received by judgement light receiving unit 132 throws light on from light source 12a, the light of the LED the transmitting whether light that judgement is received by light receiving unit 132 throws light on from light source 12a.In other words, when light receiving unit 132 detects the light time, control device 133 can judge detected only from light or the surround lighting of photoconduction and output unit 131 outputs.Therefore, can improve the accuracy in detection of inserting medium P in insert port 10a.

In addition, control device 133 can detect accordingly with the sequential of RLED, GLED and BLED sequential illumination in image-generating unit 12 scanned medium P the existence of insert port 10a medium P.In this case, because control device 133 can detect at least a portion of medium P in image-generating unit 12 scanned medium P, whether the target that is captured image and reads is present in insert port 10a, for example, when the state of the medium P of the target reading for captured image is changed into undetected state from the state having detected in insert port 10a, control device 133 just can be judged to be captured image and the medium P of the target that reads has discharged from device fuselage 10, or the rear end of reading region of medium P in transmission direction detected.

Fig. 7 is the outline flowchart of described image read-out operating process.As shown in Figure 7, when the power supply of image read-out 1 is connected from closed condition, control device 133 initialization light-receiving counting machines (light-receiving count value N=0), and the number N c of count initialized (Nc=0), to be arranged on the section (step S1) that starts the light quantity received in scanning.

Control device 133 off and on the order of R, G and B (red, green and blue) periodically toggle lights 12a come luminous (step S2), and the testing result of judgement light receiving unit 132 be the light-receiving after luminous or close after black out without light-receiving (step S3).In first embodiment, at step S2, control device 133 off and on the order of R, G and B periodically toggle lights 12a come luminous.In other words, in first embodiment, while whether having inserted medium P in judging insert port 10a, control device 133 moves light source 12a off and on.Particularly, in first embodiment, while whether having inserted medium P in judging insert port 10a, control device 133 makes light source 12a at each stage running regular time.In first embodiment, this stage regular time is predisposed to approximately inserts the time phase that medium P required time is identical, for example 0.5 second in insert port 10a with user.Stage regular time can arrange relatively shortly, such as one second.When image read-out is CIS image read-out, control device 133 judges while whether having inserted medium P in insert port 10a, light-receiving in the testing result of judgement light receiving unit 132 after being luminous or close after black out without in light-receiving, photochromic, the light-receiving grade of receiving light from the radiative output level of light source 12a and light receiving unit 132 of having further considered that light receiving unit 132 receives.

When judged light-receiving after the testing result of light receiving unit 132 is luminous or close after black out without light-receiving (being yes at step S3) time, it is N=N+1 that control device 133 arranges light-receiving count value N, and light-receiving count value increases by 1 (step S4).The testing result of having judged light receiving unit 132 be not the light-receiving after luminous or close after black out without light-receiving (being no at step S3) time, it is N=N that control device 133 keeps light-receiving count value, does not change light-receiving count value (step S5).

Whether the number N c of control device 133 judgement counting has reached the measurement times N 0 of appointment, and it is the measurement number of times of being scheduled to, namely Nc=N0 (step S6) whether.When judging that the number N c of counting not yet reaches the measurement times N 0 (being no at step S6) of appointment, the testing result that control device 133 judges light receiving unit 132 whether corresponding to the light-receiving after luminous or close after black out without light-receiving, simultaneously off and on the order of R, G and B periodically toggle lights 12a come luminous, until the number N c of counting reaches the measurement times N 0 of appointment, and repeat to upgrade light-receiving count value N (step S3 to S5) according to judged result.As control device 133, repeat to upgrade the result of light-receiving count value N, light-receiving count value N increases with the conform to increase of number of times of the light-emitting mode of light source 12a and the light-receiving pattern of light receiving unit 132.

When judging that the number N c of counting has reached the measurement times N 0 (being yes at step S6) of appointment, control device 133 judges whether light-receiving count value N is less than threshold X (step S7).Threshold X is for judging whether insert port 10a has inserted the threshold value of the light-receiving count value N of medium P, and is preset.When light-receiving count value N is less than threshold X (being yes at step S7), control device 133 detects medium and is inserted into (step S8).

After the insertion that medium detected, control device 133 finishes the judgement (end) of whether having inserted medium P in insert port 10a.When the insertion of medium being detected, finish to judge that while whether having inserted medium P in insert port 10a, control device 133 is carried out to draw in advance and controlled and scanning.Here the control of drawing in advance of carrying out means that control is for when the power supply of image read-out 1 is connected from closed condition, pressing scan button (not showing) before, control device 133 to drive motor power supply with rotating drive roller 111a, thereby by driving rolls 111a and return idler 111b, in transmission direction, remain on one end of the medium P inserting in insert port 10a.

When judging that light-receiving count value N is equal to or greater than threshold X (being no at step S7), control device 133 judges that medium is not yet inserted into (step S9).When judging that medium is not yet inserted into, the number of control device 133 initialization light-receiving counting machines and counting, and the section (step S1) of the light quantity receive is set, then off and on the order of R, G and B periodically toggle lights 12a come in luminous to repeat the measurement (step S2 to S6) of light-receiving count value N, until judge that light-receiving count value N is less than threshold X (being yes at step S7).

As explained above, according in the image read-out 1 of first embodiment, while having inserted medium P in the insert port 10a of device fuselage 10, the medium P being inserted into insert port 10a from least a portion of the light of photoconduction and output unit 131 outputs is blocked in insert port 10a, so the light of being received by light receiving unit 132 has changed.Particularly, for example, the light quantity of being received by light receiving unit 132 has reduced.Therefore,, according to whether having inserted medium P in insert port 10a, the testing result of light receiving unit 132 is different.Therefore,, according to whether having inserted medium P in insert port 10a, the judged result of light receiving unit 132 is different.In other words, the medium P being inserted in insert port 10a is detectable.Therefore,, with novel configuration, the medium P that is inserted into device fuselage 10 is detectable.Because be exactly light source 12a for detection of the light source that is inserted into the medium P in insert port 10a, so the light source that detects medium P needn't be separately provided in insert port 10a.In addition, because the medium P being inserted in insert port 10a can be detected by the light receiving unit 132 of for example installing a position, so needn't provide a plurality of sensors along Width.Therefore, can reduce the number of device feature, thus size that can reduction means.

When control device 133 judges that while whether having inserted medium P in insert port 10a, light receiving unit 132 can detect from the light of photoconduction and output unit 131 outputs together with surround lighting.Therefore, control device 133 is changed into the luminescence feature for detection of medium by the luminescence feature of light source 12a, and contrast is for detection of the luminescence feature of light source 12a and the testing result of light receiving unit 132 of medium, according to comparing result, judge in insert port 10a, whether to have inserted medium P, thereby can improve the accuracy in detection of inserting medium P in insert port 10a.In other words, while whether having inserted medium P in judging insert port 10a, variation in the luminescence feature of the light source 12a that control device 133 detects according to light receiving unit 132, the medium P whether judgement is inserted into mouthful 10a from least a portion of the light of photoconduction and output unit 131 outputs stops, thereby can improve the accuracy in detection of inserting medium P in insert port 10a.

Particularly for example, when control device 133 judges whether to have inserted medium P, control device 133 makes light source 12a luminous to be different from the luminescence feature of surround lighting feature, so the testing result of light receiving unit 132 becomes, is not vulnerable to the impact of surround lighting.Therefore, can further improve the accuracy in detection of inserting medium P in insert port 10a.

In addition, control device 133 can be by also considering following truth, while whether having inserted medium P in judging insert port 10a, obtained and to be whether the light-receiving after luminous or to close the identical continuous judged result without light-receiving after black out, improved the accuracy in detection of inserting medium P in insert port 10a.When control device 133 judges whether light-receiving count value N is less than threshold X, because the measurement times N 0 of appointment is set to larger value, can improve the accuracy in detection of inserting medium P in insert port 10a.In other words, by whether identical or similar with the luminescence feature of light source 12a according to the testing result of light receiving unit 132, judge in insert port 10a whether inserted medium P, control device 133 can improve the accuracy in detection of inserting medium P in insert port 10a.

When control device 133 judges while whether having inserted medium P in insert port 10a, because light source 12a moves off and on, the power consumption of light source 12a can reduce in judgement.

Next step explanation is according to the image read-out of second embodiment of the invention.Fig. 8 is according to the birds-eye view of the image read-out vitals of second embodiment.According to the image read-out 1 of second embodiment, be characterised in that, it comprises surround lighting barrier structure 134, for preventing that surround lighting from entering the optical receiving surface 132a of light receiving unit 132.Except above feature, according to the basic configuration of the image read-out 1 of second embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

According to the light receiving unit 132 of second embodiment, be provided in insert port 10a inner.According to the light receiving unit 132 of second embodiment, be provided in the other end in insert port 10a inner width direction.

Surround lighting barrier structure 134 is provided in about the upstream in the direction of insertion of the optical receiving surface 132a of light receiving unit 132.Direction of insertion is exactly that medium P is inserted into the direction in insert port 10a.Surround lighting barrier structure 134 is the light of wavelength within the scope of non-conducting surround lighting wavelength at least.In second embodiment, surround lighting barrier structure 134 be wall shape to stop surround lighting.

So in second embodiment, at light, by region, a light beam of the light sending from light output unit 131a crosses between one end of insert port 10a and the other end along Width.In other words, in second embodiment, light is identical with the situation of light in first embodiment by region.

According in the image read-out 1 of second embodiment, because light receiving unit 132 can detect the light sending from photoconduction and output unit 131 together with surround lighting, so the upstream by the optical receiving surface 132a of light receiving unit 132 in direction of insertion is equipped with surround lighting barrier structure 134, optical receiving surface 132a and the surround lighting of light receiving unit 132 are isolated from each other.In other words, because the testing result of light receiving unit 132 is not subject to the impact of surround lighting, so can improve the accuracy in detection of inserting medium P in insert port 10a.

Fig. 9 is the birds-eye view of another example of described image read-out vitals.According to the image read-out 1 of second embodiment, can comprise surround lighting elimination filter 135 rather than surround lighting barrier structure 134.According in the image read-out of second embodiment, light receiving unit 132 is provided in insert port 10a, and as in the example shown in Fig. 8, and light receiving unit 132 is provided in insert port 10a the other end on Width.

Surround lighting is eliminated the optical receiving surface 132a place that filter 135 is arranged in light receiving unit 132.It is optical filters that surround lighting is eliminated filter 135, and but its conduction is the light of wavelength within the scope of non-conducting surround lighting wavelength from the light of photoconduction and output unit 131 outputs at least.

According in another example of the image read-out 1 of second embodiment, from light and the surround lighting of photoconduction and output unit 131 outputs, be separated from each other, so light receiving unit 132 detects the light of having eliminated surround lighting, mode is at the optical receiving surface 132a place of light receiving unit 132, to arrange surround lighting elimination filter 135.Equally in this case, because the testing result of light receiving unit 132 is not subject to the impact of surround lighting, so can improve the accuracy in detection of inserting medium P in insert port 10a.

Next step explanation is according to the image read-out of third embodiment of the invention.Figure 10 is according to the schematic diagram of the image read-out of the 3rd embodiment.According to the image read-out 1 of the 3rd embodiment, on sheet thickness direction, at the two ends of insert port 10a, further comprise a pair of reflecting plate 136, for the light of expanding on sheet thickness direction, pass through region.Sheet thickness direction is and medium P is inserted into all directions of quadrature of direction of insertion in insert port 10a and Width.Except above feature, according to the basic configuration of the image read-out 1 of the 3rd embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

Reflecting plate 136 is reflecting members.On sheet thickness direction, at the two ends of insert port 10a, face with each other and be equipped with a pair of reflecting plate 136.This is reflected in the light of incident on its surface facing with each other to reflecting plate 136.More specifically, this goes up the light of incident for reflecting apparent surface completely to reflecting plate 136.In the 3rd embodiment, this to the reflection completely of reflecting plate 136 referred to as reflection.

According in the photoconduction of the 3rd embodiment and output unit 131, a plurality of smooth outgoing positions are set on sheet thickness direction, from the light of photoconduction and output unit 131, from these positions, export.From according to the optical axis of the light of the photoconduction of the 3rd embodiment and output unit 131 outputs and this, normal direction of one of reflecting plate 136 apparent surfaces being intersected, the light being reflected by reflecting plate 136 is received by light receiving unit 132.In the 3rd embodiment, two light outgoing positions are for example arranged in light output unit 131a.In the 3rd embodiment, from one of two optical axises of the light of photoconduction and output unit 131 outputs, with this, normal direction of one of reflecting plate 136 apparent surfaces is intersected.In the 3rd embodiment, crossing with this another normal direction to reflecting plate 136 apparent surfaces from another of two optical axises of the light of photoconduction and output unit 131 outputs.

Utilize above configuration, in the 3rd embodiment, at light, by region, from the light of light output unit 131a output, when Width advances, by this, reflecting plate 136 is repeatedly reflected, between one end of insert port 10a and the other end, cross.

According in the image read-out 1 of the 3rd embodiment, from the light of photoconduction and output unit 131 outputs, in insert port 10a inside, by this to reflecting plate 136 reflections at least one times, and arrive light receiving unit 132.In insert port 10a, because arrive light receiving unit 132 from the light of photoconduction and output unit 131 outputs, not only on Width, move simultaneously, and also move on sheet thickness direction, even change so be inserted into the position of the medium P in insert port 10a on sheet thickness direction, also the medium P being inserted into insert port 10a from least a portion of the light of photoconduction and output unit 131 outputs stops, compare with the situation of not inserting medium P in insert port 10a, the light of being received by light receiving unit 132 has changed.Particularly, for example, the light quantity of being received by light receiving unit 132 has reduced.In other words, even if be inserted into the position of the medium P in insert port 10a on sheet thickness direction, change, the medium P being inserted in insert port 10a is also detectable.

According in the image read-out 1 of the 3rd embodiment, along with angle of incidence and the angle of reflection of the reflecting surface about reflecting plate 136 diminishes, the interval between the reflection position of the reflecting surface glazing of reflecting plate 136 on Width can shorten.Therefore, by making from intersecting with this normal direction to one of reflecting plate 136 apparent surfaces according to the optical axis of the light of the photoconduction of the 3rd embodiment and output unit 131 outputs, the angle forming is therebetween dwindled, also can shorten the interval on Width between the reflection position of reflecting surface glazing of reflecting plate 136, this light to reflector 136 reflections is received by light receiving unit 132.Therefore, image read-out 1 can detect medium P, even if the medium P being inserted in insert port 10a has relatively narrow width on Width.

According in the image read-out 1 of the 3rd embodiment, if for every light from photoconduction and output unit 131 outputs, make the angle from forming between the optical axis of light of photoconduction and output unit 131 outputs and reflecting plate 136 apparent surfaces' normal direction different, just diverse location reflection on the Width of insert port 10a of light from photoconduction and output unit 131 outputs, the position that is inserted into the medium P in insert port 10a just can be detected, even if be inserted into the position of the medium P in insert port 10a, not only on Width but also on sheet thickness direction, changes.In other words, in this case, can improve the accuracy in detection of inserting medium P in insert port 10a.

According in the image read-out 1 of the 3rd embodiment, photoconduction and output unit 131 output multi beam light, but photoconduction and output unit 131 can be launched Ray Of Light.Even if in this case, also can detect according to the image read-out 1 of the 3rd embodiment the medium P being inserted in insert port 10a.

Next step explanation is according to the image read-out of four embodiment of the invention.Figure 11 is according to the schematic diagram of the image read-out of the 4th embodiment.According in the image read-out 1 of the 4th embodiment, on sheet thickness direction, formed a plurality of light by region, with corresponding to be inserted into the change in location of the medium P in insert port 10a at sheet thickness direction.Except above feature, according to the basic configuration of the image read-out 1 of the 4th embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

According in the photoconduction of the 4th embodiment and output unit 131, a plurality of luminous positions are set on sheet thickness direction, photoconduction and output unit 131 are from these position output light.In the 4th embodiment, in light output unit 131a, setting example is as three luminous positions.

According in the light receiving unit 132 of the 4th embodiment, corresponding with a plurality of luminous positions that arrange in photoconduction and output unit 131, a plurality of light-receivings position is set on sheet thickness direction, in these positions, receive from the light of photoconduction and output unit 131 outputs.In the 4th embodiment, in light receiving unit 132, setting example is as three light-receiving positions.

Utilize above configuration, in the 4th embodiment, at light, by region, from the multi-beam of light output unit 131a output along Width, between one end of insert port 10a and the other end, cross, parallel to each other on sheet thickness direction.In other words, the light in the 4th embodiment is by region, and the light in first embodiment is by region multiple existence on sheet thickness direction.

According in the image read-out 1 of the 4th embodiment, in insert port 10a, the light sending from light source 12a a plurality of smooth outgoing position output on sheet thickness direction from photoconduction and output unit 131, and a plurality of light-receivings position receives on the sheet thickness direction of light receiving unit 132.In other words, from a plurality of regions of the light process of photoconduction and output unit 131 outputs, at sheet thickness direction, be present in insert port 10a.Therefore, even if being inserted into the position of the medium P in insert port 10a on sheet thickness direction changes, also the medium P being inserted into insert port 10a from least a portion of the light of photoconduction and output unit 131 outputs stops, the light of being received by light receiving unit 132 has changed.Particularly, even if being inserted into the position of the medium P in insert port 10a on sheet thickness direction changes, also the medium P being inserted into insert port 10a from least a portion of the light of photoconduction and output unit 131 outputs stops, and the light quantity of receiving at light receiving unit 132 also can reduce.In other words, even if be inserted into the position of the medium P in insert port 10a on sheet thickness direction, change, the medium P being inserted in insert port 10a is also detectable.

In addition, according in the image read-out 1 of the 4th embodiment, even the size of insert port 10a is relatively large on sheet thickness direction, because exist a plurality of light on sheet thickness direction, pass through region, the medium P being inserted in insert port 10a is also detectable, even if be inserted into the position of the medium P in insert port 10a on sheet thickness direction, changes.Therefore, according to the image read-out 1 of the 4th embodiment, can improve the accuracy in detection of inserting medium P in insert port 10a.

Next step explanation is according to the image read-out of fifth embodiment of the invention.Figure 12 is according to the schematic diagram of the image read-out of the 5th embodiment.According to the image read-out 1 of the 5th embodiment, be characterised in that, when watching above, light is the whole opening of insert port 10a by region, to improve the accuracy in detection of inserting medium P in insert port 10a.Except above feature, according to the basic configuration of the image read-out 1 of the 5th embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

According to the image read-out 1 of the 5th embodiment, further comprise a pair of photoconduction prism 137.A pair of photoconduction prism 137 comprises the first photoconduction prism 137a and the second photoconduction prism 137b.

The first photoconduction prism 137a is the first refraction of light member.The first photoconduction prism 137a is provided in one end on sheet thickness direction in insert port 10a.The first photoconduction prism 137a optics is connected to photoconduction and output unit 131.The first photoconduction prism 137a receives from the light of photoconduction and output unit 131 outputs and by the light of receiving a plurality of positions from the width direction and reflects and output to insert port 10a inside.In the 5th embodiment, the first photoconduction prism 137a is along Width guiding and scattering from photoconduction with the light exported of output unit 131, and the light after scattering is exported to the second photoconduction prism 137b.

The second photoconduction prism 137b is the second refraction of light member.It is relative with the first photoconduction prism 137a that the second photoconduction prism 137b is provided as in insert port 10a the other end on sheet thickness direction.The second photoconduction prism 137b optics is connected to light receiving unit 132.The second photoconduction prism 137b receives the light that has passed through insert port 10a, reflects and converge received light, then converged light is outputed to light receiving unit 132.

Utilize above configuration, in the 5th embodiment, light comprises the inside of the first photoconduction prism 137a and the second photoconduction prism 137b by region, and is the whole opening of insert port 10a when watching above.

According in the image read-out 1 of the 5th embodiment, while not inserting medium P in the insert port 10a of device fuselage 10, the light sending from light source 12a is via photoconduction and output unit 131 and the first photoconduction prism 137a, between the first photoconduction prism 137a and the second photoconduction prism 137b, and received by light receiving unit 132 via the second photoconduction prism 137b.In other words, in insert port 10a, the region of passing through from the light of photoconduction and output unit 131 outputs is present in passing through of insert port 10a at sheet thickness direction.Therefore, even if being inserted into the position of the medium P in insert port 10a on sheet thickness direction changes, also the medium P being inserted into insert port 10a from least a portion of the light of photoconduction and output unit 131 outputs stops, and compare with the situation of not inserting medium P in insert port 10a, the light of being received by light receiving unit 132 has changed.Particularly, for example, the light quantity of being received by light receiving unit 132 has reduced.In other words, even if be inserted into the position of the medium P in insert port 10a on sheet thickness direction, change, the medium P being inserted in insert port 10a is also detectable.

In insert port 10a, because the light after scattering is exported to the second photoconduction prism 137b from the first photoconduction prism 137a, while not inserting medium P in insert port 10a, the whole inside of insert port 10a becomes light and passes through region.Therefore,, while inserting medium P in insert port 10a, medium P has stopped at least a portion through the light of whole insert port 10a.Therefore, compare with the situation of not inserting medium P in insert port 10a, the light of being received by light receiving unit 132 has changed beyond the question.Particularly, for example, the light quantity of being received by light receiving unit 132 has reduced beyond the question.In other words, can improve the accuracy in detection of inserting medium P in insert port 10a.

Next step explanation is according to the image read-out of sixth embodiment of the invention.Figure 13 is according to the schematic diagram of the image read-out of the 6th embodiment.As shown in figure 13, according to the image read-out 1 of the 6th embodiment, be characterised in that, it further comprises that surround lighting eliminates filter 138 and surround lighting barrier structure 134, for preventing that surround lighting from arriving about according to the second photoconduction prism 137b of the image read-out 1 of the 5th embodiment and the optical receiving surface 132a of light receiving unit 132.Because the installation sites of surround lighting barrier structure 134 etc. are with identical according to the situation of the surround lighting barrier structure 134 of second embodiment, so will omit its explanation.In addition because according to the light in the image read-out 1 of the 6th embodiment by region with according to the light in the image read-out 1 of the 5th embodiment by region identical, so will omit its explanation.Moreover, according to the basic configuration of the image read-out 1 of the 6th embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

Surround lighting is eliminated filter 138 and is arranged on plane of incidence, and it is the surface of the second photoconduction prism 137b of the first photoconduction prism 137a side, to cover the plane of incidence of the second photoconduction prism 137b.It is optical filters that surround lighting is eliminated filter 138, and but its conduction is the light of wavelength within the scope of non-conducting surround lighting wavelength from the light of the first photoconduction prism 137a output at least.

According in the image read-out 1 of the 6th embodiment, surround lighting is eliminated filter 138 and is arranged on the plane of incidence of the second photoconduction prism 137b, and surround lighting barrier structure 134 is provided in the upstream of the optical receiving surface 132a of light receiving unit 132 in direction of insertion, separating with surround lighting from the light of photoconduction and output unit 131 outputs, and make the optical receiving surface 132a shielding surround lighting of light receiving unit 132.In other words, because the testing result of light receiving unit 132 is not subject to the impact of surround lighting, so can further improve the accuracy in detection of inserting medium P in insert port 10a.

According to the image read-out 1 of the 6th embodiment, comprise surround lighting elimination filter 138 and surround lighting barrier structure 134, but it also can comprise any one in surround lighting elimination filter 138 and surround lighting barrier structure 134.In this case, according to the image read-out 1 of the 6th embodiment or will separate with surround lighting from the light of photoconduction and output unit 131 outputs, or shield surround lighting at the optical receiving surface 132a of light receiving unit 132.Therefore, in the testing result of light receiving unit 132, suppressed the impact of surround lighting.Therefore, in this case, also can improve the accuracy in detection of inserting medium P in insert port 10a.

In addition, according to the image read-out 1 of the 6th embodiment, comprise surround lighting barrier structure 134, but it also can be included in the surround lighting of explaining in second embodiment and eliminate filter 135 rather than surround lighting barrier structure 134, and surround lighting is eliminated the optical receiving surface 132a place that filter 135 can be arranged in light receiving unit 132.In this case, because the testing result of light receiving unit 132 is not subject to the impact of surround lighting, so can further improve the accuracy in detection of inserting medium P in insert port 10a yet.

Next step explanation is according to the image read-out of seventh embodiment of the invention.Figure 14 A and Figure 14 B are according to the schematic diagram of the image read-out of the 7th embodiment.Figure 14 A is the overview front elevation of image read-out 1, and Figure 14 B is the amplification front elevation of image read-out 1 vitals.Shown in Figure 14 A and Figure 14 B, according to the image read-out 1 of the 7th embodiment, comprise outlet slit plate 139a and entrance slit plate 139b, for preventing about entering according to the blinker light being reflected by medium P of the image read-out 1 of the 5th embodiment among the second photoconduction prism 137b.Except above feature, according to the basic configuration of the image read-out 1 of the 7th embodiment with consistent according to the basic configuration of the image read-out 1 of first embodiment, so will omit its explanation.

Outlet slit plate 139a is arranged on exit surface, it be the first photoconduction prism 137a on the surface of the second photoconduction prism 137b mono-side, to cover the whole exit surface of the first photoconduction prism 137a.Outlet slit plate 139a is included in a plurality of outlets crack 139c forming side by side on Width.Outlet crack 139c exports from the first photoconduction prism 137a the light of the first photoconduction prism 137a scattering to the second photoconduction prism 137b.In the 7th embodiment, outlet crack 139c on outlet slit plate 139a with Width on the interval of rule form.

Entrance slit plate 139b is arranged on the plane of incidence of the second photoconduction prism 137b, to cover the whole plane of incidence of the second photoconduction prism 137b.Entrance slit plate 139b is included in a plurality of entrances crack 139d forming side by side on Width.The outlet crack 139c forming in entrance crack 139d and outlet slit plate 139a forms accordingly.In other words, the number of the entrance crack 139d forming in entrance slit plate 139b is identical with the number of outlet crack 139c in outlet slit plate 139a.Entrance crack 139d faces with corresponding outlet crack 139c on sheet thickness direction.In the 7th embodiment, entrance crack 139d forms at regular intervals on the Width of entrance slit plate 139b, on sheet thickness direction, faces with outlet crack 139c.The light of exporting via the outlet crack 139c outlet slit plate 139a from the first photoconduction prism 137a passes through insert port 10a along sheet thickness direction, and arrives the second photoconduction prism 137b via the entrance crack 139d in entrance slit plate 139b.

Utilize above configuration, it according to the light in the image read-out 1 of the 7th embodiment, by region, is the combination of the first photoconduction prism 137a and the second photoconduction prism 137b inside, and many light beams of wherein exporting from the first photoconduction prism 137a, on Width, between the exit surface of the first photoconduction prism 137a parallel to each other and the plane of incidence of the second photoconduction prism 137b, along sheet thickness direction, pass through.In other words, according in the image read-out 1 of the 7th embodiment, light is also present in the end to end on the Width of insert port 10a by region.

According in the image read-out 1 of the 7th embodiment, because outlet slit plate 139a is arranged in the pelvic outlet plane of the first photoconduction prism 137a, and entrance slit plate 139b is arranged in the plane of incidence of the second photoconduction prism 137b, so export crack 139c and entrance crack 139d from the light of photoconduction and output unit 131 outputs via the first photoconduction prism 137a process, and enter light receiving unit 132 via the second photoconduction prism 137b.In other words, light receiving unit 132 detects through exporting the light of crack 139c and entrance crack 139d.

According in the image read-out 1 of the 7th embodiment, because export slit plate 139a, reduced from the light quantity of the first photoconduction prism 137a output, so prevented to the excessive irradiation that is inserted into the medium P in insert port 10a.The generation of the blinker light therefore, being caused by the medium P being inserted in insert port 10a is quenchable.

In addition, because entrance slit plate 139b can prevent the blinker light or the surround lighting that are produced by medium P and enter the second photoconduction prism 137b, so just prevented the blinker light or the surround lighting that are produced by medium P to be included in the light through entrance crack 139d, be included in the light being detected by light receiving unit 132 via the second photoconduction prism 137b.Therefore, can improve the accuracy in detection of medium P.

In other words, in the testing result of light receiving unit 132, the blinker light being produced by medium P or the impact of surround lighting are subject to exporting slit plate 139a and entrance slit plate 139b suppresses.Therefore, can further improve the accuracy in detection of inserting medium P in insert port 10a.

According to the image read-out 1 of the 7th embodiment, comprise outlet slit plate 139a and entrance slit plate 139b, but it also can comprise any one in outlet slit plate 139a and entrance slit plate 139b.In this case, according to the image read-out 1 of the 7th embodiment, suppressed to produce blinker light by medium P, or prevented that the blinker light or the surround lighting that by medium P, are produced from being detected by light receiving unit 132.Therefore, in this case, in the testing result of light receiving unit 132, the impact of blinker light or surround lighting is also suppressed, thereby can further improve the accuracy in detection of inserting medium P in insert port 10a.

According in the image read-out 1 of the 7th embodiment, export crack 139c and entrance crack 139d and on Width, form at regular intervals respectively, but the invention is not restricted in this.Outlet crack 139c and entrance crack 139d can not form at regular intervals on Width, and can be arranged on Width, on sheet thickness direction, face with each other.In this case, according to the image read-out 1 of the 7th embodiment, suppress to produce blinker light by medium P, and prevented that the blinker light or the surround lighting that by medium P, are produced from being detected by light receiving unit 132.Therefore, in this case, in the testing result of light receiving unit 132, the impact of blinker light or surround lighting is suppressed, thereby also can further improve the accuracy in detection of inserting medium P in insert port 10a.

Although below explained first to the 7th embodiment, but according in the image read-out 1 of these embodiment, photoconduction and output unit 131 and light receiving unit 132 can together be provided in the one end of insert port 10a on Width, and the other end of insert port 10a can be equipped with catadioptre on Width.In other words, utilizing emitted light is located in one end of insert port 10a from the width direction, the light of launching can cross the inside of insert port 10a on Width, and the catadioptre by the insert port 10a other end on Width reflects, and the light reflecting can again on Width, cross insert port 10a inside (but, direction of light is contrary), and can be received by the light receiving unit 132 at place, the one end of insert port 10a on Width.

Although below explained first to the 7th embodiment, according in the image read-out 1 of these embodiment, can the luminescence feature of light source 12a not changed into control device 133 when light source 12a is luminous and detect medium luminescence feature used.In this case, according to first image read-out 1 to the 7th embodiment, also can detect the medium P being inserted in insert port 10a.

According to first in the image read-out 1 of the 7th embodiment, although existing light source is the light source 12a being equipped with in image-generating unit 12, existing light source can be also indicator lamp or the monitor lamp of outfit in device fuselage 10.

In addition, according to the 3rd image read-out 1 to the 5th and the 7th embodiment, may further include the surround lighting barrier structure 134 of explaining in second embodiment, and surround lighting barrier structure 134 can be provided in the upstream of the optical receiving surface 132a of light receiving unit 132 in direction of insertion.Moreover, according to the 3rd image read-out 1 to the 5th and the 7th embodiment, can also be included in the surround lighting of explaining in second embodiment and eliminate filter 135 rather than surround lighting barrier structure 134, and surround lighting is eliminated the optical receiving surface 132a place that filter 135 can be arranged in light receiving unit 132.In these cases, because the testing result of light receiving unit 132 is not subject to the impact of surround lighting, so can further improve the accuracy in detection of inserting medium P in insert port 10a.

In the time of in the insert port that plate-shaped medium is inserted into device fuselage, in insert port, from least a portion of the light of photoconduction and output unit output, by plate-shaped medium, stopped, so variation has occurred the light of being received by light receiving unit.Therefore, judging unit, according to the variation of light receiving unit received light, can detect the plate-shaped medium being inserted in insert port.Therefore, utilize above novel structure can detect the plate-shaped medium being inserted in device fuselage.In addition, because use existing light source detection to be inserted into the plate-shaped medium in insert port, so needn't be equipped with separately, detect plate-shaped medium light source used.Moreover, because the light receiving unit of installing position just can detect plate-shaped medium, thus reduced the number of device feature, thus size that can reduction means.

Although for completely, clearly open, about some specific embodiments, introduced the present invention, but subsidiary claims are not limited to this, but should be interpreted as comprising fall in all conscience herein within the basic instruction of setting forth, those skilled in the art can thinkable all modifications and alternative structure.

Claims

1. an image read-out, comprising:

Device fuselage, comprises the insert port that can insert plate-shaped medium;

Existing light source, is provided in described device fuselage, and is throwing light on when being inserted into the described plate-shaped medium reading images in described insert port;

Photoconduction and output unit, be connected to described existing light source by optics, the light that guiding is launched from described existing light source, and guided light is outputed in described insert port;

Light receiving unit, detects the light of exporting;

Judging unit, according to the result of the detection of described light receiving unit, judges whether described plate-shaped medium has been inserted in described insert port; And

A pair of reflective member, inner in described insert port, this is provided in the two ends on sheet thickness direction relative to one another to reflective member, sheet thickness direction be with described plate-shaped medium be inserted into direction of insertion in described insert port and with Width longitudinally as described insert port direction of quadrature all, and this is reflected in this light to the upper incident of the apparent surface of reflective member to reflective member, wherein

From the optical axis of the described light of described photoconduction and output unit output, with this, normal direction of one of described apparent surface of reflective member is intersected, light reflective member being reflected by this is received by described light receiving unit,

When described judging unit judges during whether described plate-shaped medium has been inserted into described insert port, described existing light source also throws light on,

In described insert port, from the region of the described light process of described photoconduction and output unit output, be present on described Width the end to end from described insert port, wherein,

The light that described photoconduction and output unit are launched by described existing light source from described one end output of described insert port on described Width, and

Described light receiving unit described other end in described insert port on described Width detects the light of exporting.

2. an image read-out, comprising:

Device fuselage, comprises the insert port that can insert plate-shaped medium;

Light receiving unit, detects the light of exporting; And

Judging unit, according to the result of the detection of described light receiving unit, judges whether described plate-shaped medium has been inserted in described insert port, wherein,

In described insert port, from the region of the described light process of described photoconduction and output unit output, be present on the Width longitudinally as described insert port the end to end from described insert port,

Described light receiving unit described other end in described insert port on described Width detects the light of exporting, wherein,

In described photoconduction and output unit, a plurality of smooth outgoing positions are set on sheet thickness direction, light from described photoconduction and output unit is exported from these positions, sheet thickness direction be with described plate-shaped medium be inserted into direction of insertion in described insert port and with described Width direction of quadrature all, and

Corresponding to the described a plurality of smooth outgoing positions that arrange in described photoconduction and output unit, in described light receiving unit, a plurality of light-receivings position is set on sheet thickness direction, in these positions, receive from the light of described photoconduction and output unit output.

3. according to the image read-out of claim 2, wherein,

Described light receiving unit is configured to detect according to detected light the luminescence feature of described existing light source, and

The described result of the described judging unit contrast described luminescence feature of described existing light source and the detection of described light receiving unit, and judge according to the result of described contrast whether described plate-shaped medium has been inserted in described insert port.

4. according to the image read-out of claim 3, further comprise light emitting control device, when described judging unit judges whether to have inserted described plate-shaped medium, change the described luminescence feature of described existing light source, wherein,

When described judging unit judges whether to have inserted described plate-shaped medium, it is luminous to be different from the described luminescence feature of surround lighting feature that described light emitting control device is controlled described existing light source.

5. according to the image read-out of claim 2, wherein,

It is inner that described light receiving unit is provided in described insert port, and

Described image read-out further comprises surround lighting barrier structure, be provided in described plate-shaped medium and be inserted in the direction of insertion in described insert port the upstream with respect to the optical receiving surface of described light receiving unit, and at least stop the light of the wavelength in environment optical wavelength range.

6. according to the image read-out of claim 2, wherein,

Described image read-out further comprises surround lighting elimination filter, be provided on the optical receiving surface of described light receiving unit, and be optical filter, but its conduction is the light of the wavelength within the scope of non-conducting surround lighting wavelength from the described light of described photoconduction and output unit output at least.

7. according to the image read-out of claim 2, wherein, when described judging unit judges whether to have inserted described plate-shaped medium, described existing light source moves off and on.

8. an image read-out, comprising:

Device fuselage, comprises the insert port that can insert plate-shaped medium;

Light receiving unit, detects the light of exporting;

Judging unit, according to the result of the detection of described light receiving unit, judges whether described plate-shaped medium has been inserted in described insert port;

The first refraction of light member, inner in described insert port, be provided in one end of sheet thickness direction, sheet thickness direction be with described plate-shaped medium be inserted into direction of insertion in described insert port and with Width longitudinally as described insert port direction of quadrature all, by optics, be connected to described photoconduction and output unit, reception, from the described light of described photoconduction and output unit output, reflects the light receiving, and it is inner that reflected light a plurality of positions from described Width are outputed to described insert port; And

The second refraction of light member, inner in described insert port, be provided in the other end on sheet thickness direction, relative with described the first refraction of light member, by optics, be connected to described light receiving unit, receive the light that has passed through described insert port inside, the light receiving by refraction converges received light, and converged light is outputed to described light receiving unit, wherein

When described judging unit judges during whether described plate-shaped medium has been inserted into described insert port, described existing light source also throws light on, and

In described insert port, from the region of the described light process of described photoconduction and output unit output, be present on described Width the end to end from described insert port.

9. image read-out according to Claim 8, wherein, the light of described the first refraction of light member along described Width guiding and scattering from described photoconduction and output unit output, and export the light after scattering to described the second refraction of light member.